MechChem Africa July-August 2021

⎪ Minerals processing and materials handling ⎪

BMG’s advanced solutions for the chemical sector

BMG’s range of Danfoss electronic, mechanical and intelligent ‘mechatronic’ devices are designed to optimise automation processes and reduce energy consumption in many sectors, including the chemical industry.

PTC option that ensures a safe shutdown in the event of motor faults, or a forced mains disconnect facility as an alternative. Standard DC link chokes and filters enable the VLT ® AutomationDrive FC 302 to be used with long motor cables, allowing the frequency converter to be located outside an explosion hazard area. A relay option, with eight floating contacts and additional analogue outputs, can also be mounted on the side if necessary. This system offers two options to en- sure electromagnetic compatibility; either to suppress interference at the source by minimising or eliminating interference emis- sions, or to increase the interference immu- nity of the device or system, to eliminate or reduce susceptibility to interference. BMG has been appointed as a Danfoss DrivePro ® Service Partner. Through this agreement, BMG provides a support ser- vice for VLT ® and VACON drives that en- compasses troubleshooting, maintenance, repairs and replacements. As a Danfoss DrivePro Service Partner, BMG also offers specialised training and technical support to improve productivity, performance and uptime for the entire life cycle of Danfoss drives. www.bmgworld.net

Danfoss VLT ® AutomationDrive solutions for the chemical sector ensure energy savings, increased flexibility, high efficiency processes and low maintenance requirements.

W ith themodularDanfossVLT ® drive system – which encom- passes specific power sizes, features, enclosure classes andfieldbus protocols – eachplant candeter - mine what parameters are essential to meet specific industry requirements. “Danfoss VLT ® AutomationDrive units effectively reduce operational costs and increase efficiency in any motor driven chemical plant application, ensuring opti- mumdrive solutions in the commissioning of a new plant or the conversion of an existing factory,” explains Mick Baugh, Electronics Business Unit Manager, Electromechanical division, BMG. “This versatile system, avail - able in the power range up to 1.4 MW, is built on a modular design concept and is available as a single module, control cabinet or as a complete drive system to meet exact requirements. Typical applications include pumps, condenser fans, compressors, extruders, mixers, dosers and centrifuges. “With the addition of the newly launched 690 V versions of VLT ® AutomationDrive units, we now also offer a wider range of compact drives for the power range 1.1 to 75 kW. The new Danfoss D frame VLT ® AutomationDrive units, which are signifi- cantly smaller than previous series, feature a 250 kW frequency converter regarded as the smallest in its class and with an impres- sive IP 54 enclosure rating. These compact units are equipped with integrated DC link chokes and EMC filters to minimise mains

interference,” says Baugh. VLT ® AutomationDrive frequency con- verters can be individually configured with specially coated circuit boards for safe use in harsh ambient conditions and with the additional safety functions required in the chemical sector. Safety solutions include the VLT ® Safe Option MCB 140/MCB 150 and a VLT ® PTC Thermistor Card tomonitor Ex d and Ex e motors. VLT ® AutomationDrive FC 302 frequen- cy converters can also be used to control ATEX-certified, frequency converter com- implement the required ATEX-certified temperature monitoring directly in the frequency converter. The systemalso offers universal resid- ual current monitoring. The external fault current monitoring module reliably detects sudden insulation faults in equipment and also enhances preventativemaintenance by detecting gradual insulation deterioration. The pre-configured connection kit enables quick and easy commissioning, with no need to configuremonitoring parameters. The Danfoss chemical module is a specially designed package that provides all the protective devices necessary for the operation of EExd flameproof motors used in this sector. Features include the patible motors, for safe op- eration in zones 1 and 2 (gas) as well as zones 21 and 22 (dust). With the DanfossMCB 112 PTC option, users can now

An exploded view of the Danfoss D frame VLT AutomationDrive.

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